"Darkness falls over Cybertron as the legendary Onyx Prime returns, throwing the planet into chaos! What does this mean for Optimus Prime--and Earth?" -- Amazon.com
1 volume (unpaged): color illustrations ; 26 cm.
Optimus Prime. Volume 4
"Originally published as Optimus Prime issues #15-21."
Subjects:Robots -- Comic books, strips, etc.
Science fiction comic books, strips, etc.
Transformers (Fictitious characters) -- Comic books, strips, etc. -- Fiction.
Other Authors:Burcham, Josh, colorist.
Long, Tom B., letterer.
Pitre-Durocher, Sara, artist.
Ramondelli, Livio, artist.
Zama, Kei, artist.